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- Question
Which of the following is not a unit of energy?
Options- A. Calorie
- B. Joule
- C. electron volt
- D. Watt
- Correct Answer
- Watt
ExplanationThe watt(symbol: W) is a unit of power. In the International System of Units (SI) it is defined as a derived unit of 1 joule per second, and is used to quantify the rate of energy transfer. In dimensional analysis it is described by
- 1. What is the other name of Galileo's law of falling bodies?
Options- A. Law of motion
- B. Newton's first law
- C. Newton's second law
- D. Newton's third law Discuss
- 2. A person lifts luggage of 20 kg from the ground and puts it on his head 2 in above the ground. Calculate the work done by him. (g = l0 )
Options- A. 20 J
- B. 400J
- C. 200J
- D. 40J Discuss
- 3. Which property of metals enables production of metallic foils?
Options- A. Malleability
- B. Ductility
- C. Sonority
- D. Conductivity Discuss
- 4. A person does some work of 1,000 J in 2 s. His power will be ......
Options- A. 1000W
- B. 25W
- C. 500W
- D. 50W Discuss
- 5. "When a card placed over a tumbler is flicked with the finger, the coin placed over it falls in the tumbler".
Options- A. Law of conservation of energy
- B. Newton's third law of motion
- C. Law of Inertia
- D. Law of conservation of momentum Discuss
- 6. The boiling point of liquids vary as
Options- A. pressure varies
- B. temperature varies
- C. volume varies
- D. density varies Discuss
- 7. Bubbles of air rise up through liquids due to
Options- A. Surface tension and adherence
- B. viscosity and buoyancy
- C. air current over the liquid and buoyancy
- D. Up thrust and surface tension Discuss
- 8. Transformer is a device to convert
Options- A. D.C. to A.C.
- B. Low voltage D.C. into high voltage D.C.
- C. Low voltage A.C. into high voltage A.C.
- D. Mechanical energy into Electrical energy Discuss
- 9. The transport phenomenon occurs only in _____ state of a gas and is ______
Options- A. Non-equilibrium, irreversible
- B. Non-equilibrium, reversible
- C. equilibrium, irreversible
- D. equilibrium, reversible Discuss
- 10. A galvanometer can be converted to a voltmeter by connecting
Options- A. a high resistance in parallel
- B. a high resistance in series
- C. a low resistance in series
- D. a low resistance in parallel Discuss
Physics problems
Search Results
Correct Answer: Newton's first law
Correct Answer: 400J
Correct Answer: Malleability
Correct Answer: 500W
Correct Answer: Law of Inertia
Correct Answer: pressure varies
Correct Answer: viscosity and buoyancy
Correct Answer: D.C. to A.C.
Correct Answer: equilibrium, irreversible
Explanation:
The transport phenomenon occurs only in equilibrium state of a gas and is irreversible.
Correct Answer: a high resistance in series
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